There doesn't seem to be much advertising here in Vietnam, at least not the kind of advertising that I was used to in the US. There are no commercials on TV, & there aren't many billboards around. The only signs I see are in front of businesses. Even in the newspapers, there doesn't seem to be any advertising.
So how do people know about new products or businesses? Word of mouth, maybe? Or maybe I just don't notice the Vietnamese method of advertising because I don't speak much Vietnamese, so I can't differentiate what's advertising & what's not.